Based on an idea by sheetpiled on Tumblr (slightly altered, though): what if Jake and Gina made a strong bet in their young years and now Jake must name his kid something Gina chooses, and Gina decides something like Beyonce?
From the corner of his eye, Jake can see his best friend stop Amy in her tracks and start excitedly talking to her on her way back from the bathroom. He notices how she turns her gaze from Charles for a second, shooting a knowing glance at him from the other side of the room before putting her attention back on the man in front of her, faking a bright smile while she listens to his ramblings.
He watches them, amused, for a few minutes before thinking about coming to his wife's rescue and save her from their colleague's grasp. He doesn't have the time to stand up and leave his booth, though, because soon enough Gina is taking a seat in front of him with a beer in her hand and a huge victorious grin on her face, forcing him to remain where he is.
"So, what do you think of Pantsuits? Could fit a girl or a boy… and Amy," the woman says without prompting, making her friend frown in confusion.
"Since when do you care about pantsuits?" he asks, curious they'd have such a conversation.
"I don't. I just think it could be a good name for your baby."
The simple use of the words 'your' and 'baby' next to one another makes the man across the table smile dreamily. Your baby. He's going to have a baby – his baby, with Amy. They're gonna be parents.
Sure, he's known that for a few weeks already, when his wife broke the news to him in the evidence locker of their precinct (truly, this room has become his lucky room, when it comes to his relationship with her partner – and this from the very start of their love story) but he's not sure he'll ever stop being astonished that it's happening – even more so now that they finally let their squad in their little secret.
It makes it all the more real.
"Hmmm, I don't know," Jake eventually comes back to the reality of the moment, remembering the woman's offer and taking a pause to consider it. "I'm not sure Amy would be into it. She already refused we add 'Nakatomi' to our list because there's no way we'll name our child after a tower, babe!"
Despite what he just said, turning down her idea, Gina's smile surprisingly only grows bigger when she hears her friend's words. "Oh, girl," she lets out an exaggerated sigh when she speaks in return, her beam still making her face shine brightly. "You don't remember, do you?" She watches the man, who simply tilts his head on the side, trying to understand what she's talking about, but apparently failing at it.
"Remember what?!" He gives up.
"9th grade. We made a deal – I talked about you to my friend Nathalie and, in exchange, you said I could choose your first child's name. Well, it's happening, girl. Get ready for it."
Jake's features instantly go white and his mouth opens in half, though no sound seems to go out of it. Flashes of his younger self, shaking hands with a younger Gina, suddenly pops into his head – a memory he obviously forgot until now.
"Oh, no," he eventually lets out, defeated, cursing his past-self for being so stupid and already regretting what he did at the time.
Amy's gonna kill him when she learns about this pact he made with his old friend – for nothing, even; Nathalie never agreed on going out with him despite the other girl's praises.
"Oh, yes," Gina grins in victory at the detective's reaction.
When he eventually regains some composure, Jake doesn't have the time to try and persuade the woman to abandon her part of the deal, because his wife comes out of nowhere and approaches the pair, having apparently managed to make Charles leave her alone. She doesn't feel the heavy atmosphere weighing on the booth, sitting next to her husband with a sigh, immediately curling against his side.
On instinct, his hand comes finding its rightful place on her belly, softly skimming her skin over her blouse with his thumb. It makes them relax instantly, no matter their moods right now.
"Ugh, I'm starting to regret telling everyone about the baby so soon." The sergeant begins with her ranting as she feels the urge to let it all out, not even acknowledging Gina's presence in front of them. "Charles wouldn't shut up about giving me his gross pregnancy tips."
It's only when she's met with silence on Jake's part that she takes a better look at him, and sees that something's wrong with him: his gaze is hanging low, stuck on the table in front of him, unable to meet her eyes while his hand curls harder on her stomach. Her own eyes wander between the two members of their squad, then, her brows furrowed together. "What's going on?" she asks him.
"We were talking baby names," Gina's the one who answers her in an enthusiastic voice while the male brunette only hides further into his seat, as if trying to disappear inside of it.
"Oh, really?" Amy's face lits up at the words, all concern momentarily forgotten, triggered by such a conversation. "We started a list of names we like!" she excitedly says. "We can't really agree with many of them yet, but it's in progress. Right, babe?" She turns towards her husband, who's still speechless, now squealing with edginess.
In front of them, their friend lets out an amused snort.
"Jake?!" The sergeant frowns and, when he hears his name, he finally looks up and straightens up in his seat, watching her with an apologetic smile slightly curling up the corners of his mouth.
"There's… something I need to tell you." He takes a deep breath, seeking some courage to tell his wife the truth. "Gina and I made a deal a long time ago–…"
He doesn't have the time to go on with his explanation, because Amy lets out a loud gasp, her eyes growing bigger and her hand coming to rest on her stomach in an instinctive, protective move at the man's reveal. "Oh my God, Jake, what did you do? Don't tell me you promised you'd give her your first born in exchange of something stupid?!" She seems on the verge of breaking down.
"What?!" Gina pouts, not understanding what's going on here.
"We're binge-watching Once Upon A Time." Jake turns to his friend – he, on the other hand, doesn't seem the least disturbed by his wife's reaction. "She's freaked out by Rumplestiltskin."
"He steals babies, Jake, what's worst than that?!" Amy replies, on the defensive.
Hearing the couple's words, the civilian administrator grimaces even more. "I don't want your baby." She seems disgusted by the thought of it.
"What's going on, then?" The other woman puts her whole attention back on her husband, watching him intently with a raised eyebrow, waiting for him to explain everything to her.
He sighs before finally letting it all out. "Well, when we were children, I promised–"
"– Blood-promised," Gina corrects.
"– Blood-promised that I would let Gina choose my first born's name." Jake quickly lowers his gaze when he's done talking, afraid of meeting his wife's eyes again.
There's a pause, during which a heavy silence fills the booth, until realisation finally hits Amy. "WHAT?! Jake, we can't let her choose our baby's name! She called hers The Enigma! And what about the list?"
"Do you have a problem with my girl's name, Santiago?!" Gina snaps back, glaring at her friend from the seat facing her.
"N–no… Not at all." She forces a smile. "It's very… original? You know I love Iggy!" She tries her best to make up for what she just said.
Gina doesn't seem to buy it, but she doesn't say anything back regarding this matter either. She simply starts standing up, shaking her head and, while she acts like leaving the couple's table, she tells them, a smug grin back on her features, "Anyways, a deal's a deal, you can't break it. Prepare yourselves to bring Pantsuits into the world."
After she's gone, there's a moment during which none of the husband and wife speaks, lost in their own minds. Until Jake finally attempts a glance up at the woman by his side.
"I'm sorry, Ames." He breaks the silence surrounding them, watching her with an apologetic look on his face. "I totally forgot about this. To be honest, I made this deal because, at the time, I was sure I'd never become a father anyways so it'd be a win for me. I couldn't imagine myself finding someone as amazing as you wanting me and… wanting to have a family of our own."
He looks back down again after that, not out of shame this time though, only to watch his wife's belly, a small smile spreading across his face when his eyes lay on it. He can't see it then, but Amy's expression suddenly softens with her husband's words, feeling her heart clench in her chest.
She doesn't say anything right away and only comes circling his shoulders with her arm, making him scoot further into her side.
"That's okay," she eventually answers him. "We'll just have to give the baby a middle name we like and only use this one when we call her." She gently, absentmindedly strokes his arm, smiling too as she speaks.
"You still think it's gonna be a girl, huh?" Jake lets out an amused chuckle.
"Well, I don't know if you remember this one, but you have another bet going on, and I well intend to win it." The woman laughs along with him.
The detective slightly draws away from his wife's embrace so that he can meet her eyes. "I do remember. But I'm gonna win." He gives her a knowing look, before he gets closer again, pressing a soft kiss against Amy's lips.
"I love you so much," she whispers when they part, her hand cupping her cheek.
"I love you so much too," he instantly replies. "And you, too, little Pantsuits," he jokes, caressing the woman's stomach as he looks back down at it, which makes her let out a heartfelt giggle while rolling her eyes at his silliness.
(In the end, despite months of teasing them about their future child's name, that only increases when they tell her the sex – it's gonna be a girl – and sending them lists of names all more horrendous than the previous ones, Gina surprises them when she enters the hospital room where the little family is all curled up on Amy's bed a few hours after the newborn's birth, her parents watching her sleep in her mother's arms with happy tears in their tired eyes, and she lets them know of the name she eventually chose for her.
"Ana," she tells them. The couple frowns in surprise and confusion, because this is the one name they finally both agreed on coming from their list of 'backup names' – and, from the mysterious grin the woman gives them when they confront her about it and she simply shrugs before leaving the room just as quickly as she came in, they understand she somehow knew that already.
"Well, welcome to the family, little Ana," Jake softly kisses the top of his daughter's head before doing the same with his wife.)